Modifying a Russian 82mm mortar shell - GIF

A Russian 82mm mortar shell reduced to 81mm to fit American-provided M252A1 mortars.

<video controls autoplay loop>
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17151185238658.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>


Previously:

100 tons of ammunition being disposed of - GIF
Rifle and shotgun ammunition lineup - photo
Mortar fire shockwave - GIF
WWI soldiers firing a trench mortar - video
How mortars work - GIF

I'm assuming that's not a live round...

They would be wasting time if it was not.